How to Measure a Room for New Flooring
A practical measuring method for rooms, closets and unusual floor plans.
Use this guide to understand the measurements and choices that go into a reliable material estimate. For exact purchasing quantities, consult the relevant product label or supplier.
Take measurements at the floor
Measure from finished wall to finished wall near floor level. Record the longest usable length and width, especially in rooms with walls that are not perfectly straight. Keep all measurements in the same unit. A sketch with each dimension is often more dependable than a number written without context.
Measure alcoves, closets and recessed doorways separately if they will receive the same flooring. Do not assume a room is a perfect rectangle until you check the corners and edges.
Break unusual shapes into rectangles
For an L-shaped room, draw a line on your sketch to divide the floor into two nonoverlapping rectangles. Multiply each rectangle’s length by width, then add the areas together. This approach also works for rooms with bump-outs and short connecting hallways.
For example, a 12 ft by 10 ft section is 120 sq ft. An attached 4 ft by 6 ft alcove adds 24 sq ft, giving 144 sq ft before overage. Check that the two sections do not overlap.
Convert area into an order
After finding net square footage, allow for offcuts and mistakes. Straightforward layouts often begin with a modest waste percentage; diagonal patterns and narrow rooms can need more. Divide the adjusted area by the coverage printed on one carton and round up.
Before placing the order, verify carton coverage, product batch, direction of installation and whether the flooring can be installed beneath fixed fixtures. Keep the room sketch so the retailer or installer can double-check your quantities.
Quick project checklist
- Sketch the room and label every measurement.
- Add closets and alcoves that will be covered.
- Check exact carton square-foot coverage.
- Choose waste based on product and layout, not guesswork.
Put the measurements to work
Try the related calculator to turn your dimensions into an initial material estimate.
Open Flooring Calculator →